This two-output circuit was found in General Electric documentation from the 1990s. The circuit uses an NTC as a sensor and the control element is an SCR.
For bench use, this circuit functions as a bistable safety switch. The circuit is from a Radio...
Found in an English documentation from 1989, this circuit is intended for equalization of cassette...
This circuit from the 60's uses germanium transistors of the time. Listening is done on high...